package com.itheima.config;

import com.itheima.Filter.JacksonObjectMapper;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.cbor.MappingJackson2CborHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;



@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

//    自定义的对象转换器：把sql里的雪花bigint转换为string类型

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        converters.add(0,messageConverter);
    }


 //为了访问前端用户的路径

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
       registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
       registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }
}
